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Reports Comparators defined as lambda expressions which could be expressed using
methods like <code>Comparator.comparing()</code>.
<p>Some comparators like <code>(person1, person2) -> person1.getName().compareTo(person2.getName())</code>
  could be simplified like this: <code>Comparator.comparing(Person::getName)</code>.</p>
<p>Also suggests to replace chain comparisons with Comparator.thenComparing(), e.g.
  <code>
    int res = o1.first.compareTo(o2.first);
    if(res == 0) res = o1.second.compareTo(o2.second);
    if(res == 0) res = o1.third - o2.third;
    return res;
  </code> will be replaced with
  <code>
    objs.sort(Comparator.comparing((Obj o) -> o.first).thenComparing(o -> o.second).thenComparingInt(o -> o.third));
  </code>
</p>
<!-- tooltip end -->
<p><small>New in 2016.3</small></p>
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